BoatsHinckley Yachts 21

Hinckley Yachts 21

Fractional Sloop · Long Keel · 1946–1950

A rare long-keeled fractional sloop designed by John Alden with Carl Alberg, featuring a heavy displacement for stability

Designed by Carl Alberg & Alden, built by Henry R. Hinckley.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Long Keel

Is it for you?

Character

Where this design lands on the numbers a shopper trusts — read straight from her own ratios.

LivelySea-kindly

Her heavy displacement on a narrow beam gives 38 — a sea-kindly motion in a seaway.

Comfort ratio 38
CoastalBluewater

At 1.54 she sits well under the 2.0 line — a solidly ocean-capable hull for her size.

Capsize screening 1.54
LightHeavy

436 — very heavy for her waterline, a serious load-carrying cruiser.

Displacement / length 436
EasygoingPowered-up

16.2 — moderate power for her weight; steady, all-round performance.

Sail area / displacement 16.2
TenderStiff

35% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 35%

Built heavy and sea-kindly — a boat made to cross oceans and forgive a rough night.

  • Narrower than ~78% of boats her size on file

Compared with 356 boats of the same type within a quarter of her length.

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Ballast / displacement
34.8%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
16.2
Displacement / length
436.3
Comfort ratio
37.7
Capsize screening
1.54
Hull speed
6.1 kn
Pounds / inch immersion
600
Hull
Hull type
Long Keel
Construction
Wood
Ballast type
Lead
Production
Years built
1946–1950
Units built
20
Designer
Carl Alberg, Alden
Builder
Henry R. Hinckley, Hinckley Yachts

Boats like this, on the water

Nobody has filmed this one — but these are close.

Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.

Alberg 309.22 mSame hull family0.5 m longerA 25-year production classic with a heavy displacement-to-length ratio that remains a capable choice for offshore passages
Sea Sprite 309.20 mSame hull family0.5 m longerA 9.2-metre cruiser with a 41% ballast ratio, delivering a stiff and steady motion for coastal passages
Pacific Seacraft Orion 279.42 mSame hull family0.7 m longerA heavy-displacement cutter designed by Henry Mohrschladt for offshore stability and traditional long-keel handling
Cape Dory 288.56 mSame hull familyNear-identical lengthA classic Carl Alberg full-keel masthead sloop designed for steady, comfortable cruising
Cape Dory 278.25 mSame hull family0.4 m shorterA 1977-1985 production masthead sloop featuring a 40% ballast ratio for stability in a traditional full-keel hull
Cape Dory 30C9.21 mSame hull family0.5 m longerA cutter-rigged cruiser with a full keel and a 1.27-metre draft, built for steady performance between 1976 and 1987

The family

Related models

The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.

Keep looking

Nothing filmed of this one yet

Two ways to keep looking — both search what the fleet has actually recorded.

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